TH and Parkinson disease: Figure 1c showed the number of TH positive neurons in each group, on the 6th day (140.6c neurons), 8th day (106.8 ± 8.7 neurons) and 12th day (53 ± 9.8 neurons) after MPTP injection, DA neurons were reduced by 47, 58, and 76% compared with normal control (269.5 ± 9.6 neurons), respectively, however, the DA neurons in the SN region were respectively increased by 29, 25 and 28% in EriB treatment group at the 6th (221.8 ± 10.6 neurons), 8th (173.2 ± 11.2 neurons), and 12th days (127.9 ± 9.1 neurons) in PD model.